Created by
cia_rana
last modified
| def answer(a, b, c, x, y)
s = a <=> 0
a, b, c = [a, b, c].map{|e|s*e}
x2 = 1 + x1 = x
y2 = s + y1 = y * s
y1, y2 = y2, y1 if s < 0
is_common, is_contact = [-1, 0].map{|e|2*a*x1 < -b && -b < 2*a*x2 && (a*c-b*b <=> a*y2) == e}
f1, f2 = [x1, x2].map{|e|(a*e+b)*e+c}
if f1 < y1 && f2 < y1
" UL"[s]
elsif f1 <= y1 && f2 <= y1
" ul"[s]
elsif (f1 > y2 && f2 == y2 || f1 == y2 && f2 > y2) && !is_common || is_contact
" lu"[s]
elsif f1 > y2 && f2 > y2 && !is_common
" LU"[s]
else
?S
end
end
puts answer(*gets.split.map(&:to_i))
|